Posted: 10/07/2016 at 11:54
Hi Tim - I think a combination of the amount of water and what you have in the container might be the problem. It looks waterlogged to me. Difficult to judge when we're only seeing a tiny part of the plant though.
Up here there's plenty of water, but the soil's clay. Once bamboo establishes it tends not to run - the heavy soil helps prevent it. ( obviously, I'm generalising because there are so many varieties, but you get the idea) The heavier the soil and the more water they have, the better the drainage needs to be. I think you need to lighten the soil mix in the container to aid drainage. The only plants that like being permanently wet are pond and bog plants. Think of the plant's natural conditions and it's habit when growing in them.
Also, does it now fill the container? If so, you may need to pot it into a bigger one.The usual practice of replacing and refreshing the soil/compost each year still applies.
If you're feeding (and I wouldn't bother to be honest) you're constantly washing it out anyway with the watering. If you do want to feed, a seaweed feed to encourage foliage growth would be the most beneficial. I'm not sure why you're using one for grass though, unless it is seaweed
Last edited: 10 July 2016 11:56:32